Built them for 2m, 6m, 10m, 40m and built a tri-band 10,15 and 20 meter. Their easy, inexpensive, and have the best Front-to-back performance than all yagi\'s and log periodic. If you consider expense think about how munch you can save by buying a 500 ft. spool of 12-14 awg. wire from home depot and save yourself hundreds of dollars. Weight savings is a huge factor when worrying about structural support and strain on your rotor. Less wind load is a big factor.

Depending on the band they do have limitations like number of elements per band, but they offer a space savings way of getting on the air and obtaining the same forward gain. Generally tri-band yagis comprise of a 2el per band like a 6el tribander. Same amount of forward gain but better front-to-back plus all of the above.

Big major advantage is broad band width without sacrificing forward gain or front-to-back gain unlike yagis.

Think about practicality building a Moxon as supposed to buying a full sized tri-band yagi or mono-band beam and it should make some sense. Yes! you can stack other antennas above it like yagis and not worry.

The whole point of this hobby is too experiment and see for yourself the difference between each of them. Step back and look at your hard work mysteriously out performing other antennas by working Japan, Yemen, Australia and say "it was possible to work them because I built that antenna". Build it and take pride when you tell that DX station the reason you have a 5/9+ 30 over signal is due to your home brew yagi, quad, loop, delta loop, G5RV or of course better yet MOXON.

I built one for 20 meters a month or so ago and love it. It is mounted at about 30 feet above the ground and rotated with a Radio Shack TV antenna rotator. Not expensive. I am very impressed with the performance so far. It has been getting into just about everywhere I point it except for Africa. Hopefully that will improve as the solar cycle advances.

"Now, can anyone tell me if it would be feasableto use a 20 meter Moxon antenna for 10 meters as well? "

Hm... not directly, and I don't think even indirectly.

You can make it work pretty well on 20/17/15 with switched-in capacitors in the reflector and switched matching networks at the feedpoint... I checked that in EZNEC when I was designing the one I use now.

I don't remember if I tried to get it to work on 12 and 10, but it gets more difficult the more different the frequency is from the natural design frequency.

You could probably successfully build a 10m Moxon on the same spreaders you use for the 20m Moxon (if you do the spider type) and just use a coax relay or maybe even parallel the feedlines.

Another option would be to build a 20m Moxon on a boom and then build a 10m yagi on the same boom... you could probably use "open sleeve" coupling (where you just put the 10m driven element really close to the 20m one) and just build a driver-reflector type 10m yagi on the 20m Moxon's boom.

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